/Engine/Plugins/Online/OnlineSubsystem/Source/Public/OnlineSubsystem.h
virtual [FDelegateHandle](API\Runtime\Core\Delegates\FDelegateHandle) AddOnOnlineEnvironmentChangedDelegate_Handle ( const [FOnOnlineEnvironmentChangedDelegate](API\Plugins\OnlineSubsystem\FOnOnlineEnvironmentChangedDeleg-) & Delegate )